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Q. No.In the mitochondrial Electron Transport System, Cytochrome c:
1.
is a small protein attached to the inner surface of the outer membrane and acts as a mobile carrier for transfer of electrons between complex III and IV.
2.
is a small protein attached to the outer surface of the inner membrane and acts as a mobile carrier for transfer of electrons between complex III and IV.
3.
is a lipid present within the inner membrane and acts as a mobile carrier for transfer of electrons between complex I and II.
4.
is a lipid present within the inner membrane and acts as a mobile carrier for transfer of electrons between complex II and III.
Subtopic: ETS |
82%
Level 1: 80%+
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Fe-S proteins, involved in oxidation-reduction reactions of electron transport in mitochondria, are a part of all of the following except:
1. Complex I
2. Complex II
3. Complex III
4. Complex IV
1. Complex I
2. Complex II
3. Complex III
4. Complex IV
Subtopic: ETS |
68%
Level 2: 60%+
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For each ATP molecule produced, the number of H+ ions that must pass through F0 from the intermembrane space to the matrix down the electrochemical proton gradient, is most likely:
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 6 |
Subtopic: ETS |
53%
Level 3: 35%-60%
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The RQ [respiratory quotient]:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | is 1, when carbohydrates are used as substrate and are completely oxidized |
| II: | is less than 1, when fats are used as substrate and are completely oxidized |
| III: | is more than 1, when proteins are used as substrate and are completely oxidized |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Respiratory Quotient |
84%
Level 1: 80%+
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In the mitochondrial Electron Transport System, Ubiquinone receives reducing equivalents from:
I: Complex I
II: Complex II
I: Complex I
II: Complex II
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: ETS |
70%
Level 2: 60%+
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During aerobic respiration, the passing on of the electrons removed, as part of the hydrogen atoms, to molecular O2 with simultaneous synthesis of ATP takes place:
1. In the cytoplasm
2. In the mitochondrial matrix
3. In the intermembrane space
4. In the inner membrane of mitochondria
1. In the cytoplasm
2. In the mitochondrial matrix
3. In the intermembrane space
4. In the inner membrane of mitochondria
Subtopic: ETS |
62%
Level 2: 60%+
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Yeasts carry out ethanol fermentation but poison themselves to death when the concentration of alcohol reaches about:
| 1. | 5 per cent. | 2. | 13 per cent. |
| 3. | 20 per cent. | 4. | 45 per cent. |
Subtopic: Fermentation |
93%
Level 1: 80%+
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Regeneration of NAD+ is accomplished by:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Ethanol fermentation |
| II: | Lactate fermentation |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Fermentation |
84%
Level 1: 80%+
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If metabolism consists solely of lipids, the respiratory quotient is approximately:
| 1. | 0.7 | 2. | 0.8 |
| 3. | 0.9 | 4. | 1.0 |
Subtopic: Respiratory Quotient |
81%
Level 1: 80%+
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What is number of net ATP molecules gained during fermentation of one glucose molecule in human muscle cells?
1. 2
2. 4
3. 6
4. 10
1. 2
2. 4
3. 6
4. 10
Subtopic: Glycolysis |
85%
Level 1: 80%+
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